We are continually improving the quality of our text archives. Please send feedback, error reports,
and suggestions to archive_feedback@nytimes.com.

A version of this archives appears in print on May 1, 1912, on Page 9 of the New York edition with the headline: SENATE TARIFF FIGHT OPENS.; Taft's Position Is Assailed by Senator Simmons, the First Speaker. Order Reprints|Today's Paper|Subscribe